Hadith 1:620

Narrated Abu Huraira:

Allah's Apostle said, "The reward of the prayer offered by a person in
congregation is twenty five times greater than that of the prayer
offered in one's house or in the market (alone). And this is because
if he performs ablution and does it perfectly and then proceeds to the
mosque with the sole intention of praying, then for every step he
takes towards the mosque, he is upgraded one degree in reward and his
one sin is taken off (crossed out) from his accounts (of deeds). When
he offers his prayer, the angels keep on asking Allah's Blessings and
Allah's forgiveness for him as long as he is (staying) at his Musalla.
They say, 'O Allah! Bestow Your blessings upon him, be Merciful and
kind to him.' And one is regarded in prayer as long as one is waiting
for the prayer."